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轮边减速器行星架结构强度和疲劳寿命分析 被引量:13
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作者 项生田 李剑敏 +2 位作者 黄俊 裴中涛 闻步正 《汽车工程》 EI CSCD 北大核心 2011年第5期417-421,共5页
利用有限元法,分析了某型工程车辆轮边减速器行星架的应力分布状况。引入"应力分类"的概念,对最大载荷下行星架应力场进行分析,采用"分析设计"准则进行了结构强度校核;利用专业疲劳分析软件nSoft,预测了行星架在存... 利用有限元法,分析了某型工程车辆轮边减速器行星架的应力分布状况。引入"应力分类"的概念,对最大载荷下行星架应力场进行分析,采用"分析设计"准则进行了结构强度校核;利用专业疲劳分析软件nSoft,预测了行星架在存活率为50%和99%下的疲劳寿命,并确定了行星架的危险部位。计算结果表明该行星架强度和疲劳寿命满足设计要求。 展开更多
关键词 工程车辆 行星架 有限元分析 分析设计规范 疲劳寿命
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Effect of Web Opening on Buckling Instability of Simply Supported Steel I-Beam
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作者 Mohammed Hassanien Serror 《Journal of Civil Engineering and Architecture》 2011年第9期809-818,共10页
The lateral torsional buckling phenomenon often governs design of steel I-beams. Although web opening is often used to accommodate the required mechanical and piping works in buildings, its effect on the buckling inst... The lateral torsional buckling phenomenon often governs design of steel I-beams. Although web opening is often used to accommodate the required mechanical and piping works in buildings, its effect on the buckling instability is not considered in the design codes. In this paper, the effect of web opening on both lateral torsional buckling and local buckling behaviors has been investigated. A simply supported steel I-beam has been studied under uniform bending moment around the major axis. Buckling analysis has been performed using the finite element method. Linear regression analysis has been conducted for output data to formulate an equation for the critical moment including web opening effect. The results have shown a limited reduction in the lateral torsional buckling capacity and a significant reduction in the local buckling capacity. 展开更多
关键词 Lateral torsional buckling local buckling simply supported I-Beam uniform bending web opening
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Dynamic and Field Analysis of Pile Driving in Cameroun
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作者 Lezin Seba Minsili Thomas Tamo Tatietse +1 位作者 Ntede Nga Robert Medjo Eko 《Journal of Civil Engineering and Architecture》 2010年第8期70-76,共7页
Complexity and implementation of design norms in Cameroon required a proven foreign expertise, but nowadays local engineers are mastering modern construction techniques. They are turning to pile foundations to solve t... Complexity and implementation of design norms in Cameroon required a proven foreign expertise, but nowadays local engineers are mastering modern construction techniques. They are turning to pile foundations to solve the problem of construction sites on weak soils. The objective of this work is to present the trend of the country pile-driving capacity of some foundations design and construction companies. The proposed analytical method is based on Finite Element Method and on the theory of wave's propagation and transmission along the pile taking into account experimental data on the construction site. The proposed method is validated through recorded data during the construction of the Mungo Bridge in Cameroon, and obtained analytical results are in agreement with experimental results. 展开更多
关键词 Pile driving wave propagation bearing friction pressuremeter test design tool
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